﻿/* Copyright 2010-present MongoDB Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

using System;

namespace MongoDB.Driver.Linq.Linq3Implementation.Ast.Expressions
{
    internal enum AstDatePart
    {
        DayOfMonth,
        DayOfWeek,
        DayOfYear,
        Hour,
        IsoDayOfWeek,
        IsoWeek,
        IsoWeekYear,
        Millisecond,
        Minute,
        Month,
        Second,
        Week,
        Year
    }

    internal static class AstDatePartExtensions
    {
        public static string Render(this AstDatePart part)
        {
            return part switch
            {
                AstDatePart.DayOfMonth => "$dayOfMonth",
                AstDatePart.DayOfWeek => "$dayOfWeek",
                AstDatePart.DayOfYear => "$dayOfYear",
                AstDatePart.Hour => "$hour",
                AstDatePart.IsoDayOfWeek => "$isoDayOfWeek",
                AstDatePart.IsoWeek => "$isoWeek",
                AstDatePart.IsoWeekYear => "$isoWeekYear",
                AstDatePart.Millisecond => "$millisecond",
                AstDatePart.Minute => "$minute",
                AstDatePart.Month => "$month",
                AstDatePart.Second => "$second",
                AstDatePart.Week => "$week",
                AstDatePart.Year => "$year",
                _ => throw new InvalidOperationException($"Unexpected date part: {part}.")
            };
        }
    }
}
